英语词汇touch-needle怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	touch-needle
释义	touch-needlen. a needle of gold or silver alloy of known composition used as a standard in testing other alloys on a touchstone 试金针(用已知成分的金或银合金制成的针，在试金石上用以检验其他合金的标准)
随便看	trade wind trading trading estate trading post trading stamp trading station tradition traditional traditionalism traditionalist traditionalistic traditionally traditionary traditionist traditionless traditor traduce traducement traducer traffic trafficator traffic calming traffic circle traffic cop traffic island

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